Robotic vacuum cleaner



FIG. 1 is a perspective view of a robotic vacuum cleaner, showing our new design;

FIG. 2 is a front elevation view thereof.

FIG. 3 is a back elevation view thereof;

FIG. 4 is a left elevation view thereof;

FIG. 5 is a right elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines show portions of the robotic vacuum cleaner that form no part of the claimed design. 

CLAIM The ornamental design for a robotic vacuum cleaner, as shown and described. 